Venetian blind



July 3l, 1951 R. K. Fox 2,562,781

VENETIAN BLIND Filed Nov. 20, 1946 ZjSheets-Sheet 1 l, INVENTOR K., FQX f Ai'rDRNEYs R. K@ Fox VENETIAN BLIND 2 Sheets-Sheet 2 INVENTOR. RALPH K; Fox

ATTD R N EYE July 31, 1951 Filed NOV. 20, 1946 FIG..4-

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i', I l l l l l 3 l-"fu'N-irspfiSTATES PATENT.;opliCEL VENETIAN BLnsD *i 1 l y Ralph K.Fox,cie\elana,'ohio v z .Application November 20,1946, seriainanrosa A This inventionelatesito improvements in Venetian blinds. T Y

An`,objetof31the invention is to provide a Venetian blind that is simple in construction Vand durable irfusejv whichwill eliminate all the troubles that arise from the complicated mechanisnithat is used in present dayi Veruetia'nv blinds. The blind, though simple in construction, will give the user thereof allthe features of the more complicated type, and yet will not be subject to the drawbacks inherent to this type of blind. VAnother object of the invention is to provide slats that are unique in construction, since they can'be removed from the blind without removal of the drawcords therefrom. With the above'andother :objects and advantages in view, the invention consists of the novelv details of -construction, arrangement and combination of parts more fully hereinafter described, claimed and illustrated in the accompanying drawings in which:

Figure 1 is an elevational view of an embodiment of the invention;

Figure 2 is a fragmentary sectional view of a lock for the pull cords;

Figure 3 is a sectional view on the line 3-3 of Figure 1;

Figure 4 is a sectional view on the line 4-4 of Figure 1;

Figure 5 is an enlarged detailed view of one end of a slat;

Figure 6 is an enlarged detailed view of one end of a modied form of slat;

Figure '7 is a sectional view of the head board along the mounting for one drawcord;

Figure 8 is a perspective view of the tilting board;

Figure 9 is a fragmentary detailed view of one end of the base or lifting board;

Figure 10 is an elevational View of the cornice board;

Figure 11 is a side View of a modified form of lock for the drawcord;

Figure 12 is a top plan view thereof and Figure 13 is a sectional view on the line |3|3 of Figure 12.

Referring more in detail to the drawings, the reference numeral designates in general the Venetian blind which comprises the head board 2 I, having brackets 22 secured to the ends thereof on the undersurface thereof, whereby the Venetian blind may be hung or supported at any suitable Window or door opening.

On the outer longitudinal edge of the head board, are provided headed pins 23 which are 1 claim. (o1. 160Q-174).

adapted to be received in the keyfVslQLts-,N Lin the cornice board 25 whereby the cornice board is suspended from thehead board, andcovers the upper or operating end of the-blind.

Secured to ther` underfsurface of the head board, in relatively spaced relation to eachother, are the brackets 26,whi ch receive the trunnions 21of-thef tilting board 2 3.;` Securedto one-.end of the board 28 on the upper surfacethereof is the tilting mechanism whichgcomprises the block 29 having a convex topr39 andayat bottom to conformfto the surface: of the4` board 28., Secured to the top 3|lfof theblock 29, -atthe center thereof, by means of thefastener 3|, is the tilting cord 32 which, asis/conventional, has two free ends on which are positionedt draw'knobs 33, and by pulling either of these knobs, the tilting board will be tilted inV eitherv direction as desired.

Inwardly of the block 29, the tilting board 28 is provided on each outer longitudinal end with relatively spaced notches 34 which receive the looped ends 35 of the chain ladders 36 which, by means of cross chains 31, support the slats 38 thereon in removable relation to the ladders.

Each end of the slat 38 is provided with a T-shaped slot 39 whereby the slats removably receive the draw cords 40. The draw cords 40, at their lower ends, are secured to the center of the lifting or baseboard 4| adjacent the outer ends thereof by passing through openings 42 in the board 4|, and being knotted in the conventional manner.

The right hand cord passes upwardly through the head board 2| over pulleys 43 to extend downwardly from the head board to cover a pull knob 44 secured to the end thereof. The left hand pull cord passes over pulley 45 and through vertical openings 46 in the head board 2| to extend downwardly from the head board to have a pull knob 41 secured to the end thereof.

Mounted on the left hand bracket 22 below and in line with the openings 46 in the head board by means of ears 48 is the pull cord locking means 49, which comprises the housing 58 in which is mounted the cam 5i by means of the shaft 52, and the cam is provided with friction material 53 on the face thereof to engage the pull cords 4D. A spacing block 54 secured in the housing 50 by rivets 55 permits free turning of the cam on the shaft 52. y

On the left hand end of the lifting board 4|, there is provided the spaced parallel slots 56, which form the tongue 51. The tongue 51 is tensioned by a coil spring 58 mounted in the bore 59 3 which is provided in the board 4| at right angles to the tongue 51, and an adjusting screw 60, in the bore 59, retains the spring therein.

In Figure 6, the slat 38, instead of having a tee slot 39 formed therein, for the pull cords 40, has a spring clip 6l provided with ears 62 secured to the outer end thereof by rivets 63, whereby the slats are removably mounted on the cords 40. f

The improved simplified features of the invention comprisethe simple tilting block and its component parts.v

The cam lock for the pull cords, which is operated in the following manner: WhenV the l blind is raised by means of the pull cords, ,theV

2,562,781 ff 1 .il

l 'provement comprising a pair of supporting cords are engaged with the friction material'53, A

and as the cords are released, the cam locks .the ,1

cords and retains the blind at any desired height.

brackets for the tilt board, a block having a con- Vex top and fiat bottom, the flat bottom of said 'block engaging the upper surface of the tilt board adjacentone end thereof, tilting cords secured ,Y to and `engaging the convex top of said block Upon release of the pressure on the cords, the'Y i cam will release from the cords, and the blind can be lowered. l Y "The locking'means on the end of the lifting or'base board Which engages the pull cords and retains the lift board at any desired height, and the chain ladders which replace the conventional types in use at the present time.

These chains eliminate the tapes which get dirty and dusty, and require removal for the cleaning thereof.

' Alsowith the slats removable, the blinds are easily cleaned when necessary.

vIf desired, a rope ladder constructed similar to the chain ladder may be used, but the chain ladder is easier to clean, and will stay clean for a longer period of time.

There has thus been provided a Venetian blind that is simpler in construction and operation,

and" depending below said tilt board at opposite sides thereof, and saidftilt board having relatively-spaced slots ltherein-for engaging slat supporting means.

' RALPH K. FOX.

REFERENCES CITED The following references are of record in the file of this patent:

UNTTED STATES PATENTS 

